Aerosol-generating device having holding mechanism

An aerosol-generating device for heating an aerosol-generating article, the aerosol-generating device comprising:

• a housing having an opening;
• a chamber disposed within the housing, and configured to receive at least a portion of the aerosol-generating article through the opening in the housing;
• a heater assembly disposed within the housing, and comprising a heating element configured to heat at least a portion of the chamber;
• a mechanism comprising at least one member disposed at or proximate to the opening of the housing and configured to move between:
• a first position, in which the aerosol-generating article can be inserted into the chamber via the opening, and
• a second position, in which the at least one member has reduced a size of the opening relative to a size of the opening when the at least one member is in the first position;
• and
• at least one guide track along which the at least one member is configured to slide when the at least one member moves between the first position and the second position.